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The Bluelab EC Pen measures the electrical conductivity of your nutrient solution via electrodes on the bottom end and then displays the measurement on an LCD display
It's a mineral based product product
and won't require a pallet delivery
yield and overall plant vitality
Increases the size and quality of your flowers and crops
Maxibright Daylight 660w Pro LED Grow Tent Kit Bulky The Bluelab EC Pen measuresThe Latest And Greatest In LED Technology, Paired With A Superbly Constructed And Durable, Premium Tent! The Maxibright Daylight 660w Pro LED Grow Light is one of the best LED grow lights we have tested so far. It produces an almost perfectly even footprint, using highly efficient diodes that deliver output levels of a whopping 2. 7 umols. This kit has been carefully put together by the team at the One Stop Grow Shop and includes just about everything